Health Tools

Track and analyze sleep debt with customizable goals, interactive charts, recovery planning, and scientific insights into sleep health.

Rate your sleep quality with a comprehensive scoring system based on duration, latency, efficiency, disturbances, and daytime dysfunction. Get personalized improvement tips.

Calculate caffeine levels in your system over time with interactive charts, consumption tracking, and personalized recommendations for better sleep.

Compare weight and height measurements between multiple people. Input names, weights, and heights to see detailed comparisons and BMI calculations.

Assess fatigue risk for shift workers based on sleep duration, hours awake, shift type, and circadian factors. Get personalized safety recommendations.

Calculate your daily water intake needs based on weight, activity level, climate, and health goals. Get personalized hydration tips and track your daily water consumption.

Calculate the glycemic load of foods based on glycemic index and carbohydrate content. Estimate meal GL totals to help manage blood sugar levels and plan balanced diets.

Estimate body fat percentage using the U.S. Navy method, BMI method, or skinfold calipers. Enter your measurements to get instant results with health category classification.

Calculate your daily calorie needs using the Mifflin-St Jeor and Harris-Benedict equations. Estimate BMR, TDEE, and macros based on age, weight, height, gender, and activity level.

Estimate your fitness age based on resting heart rate, VO2max estimate, flexibility, strength, and lifestyle factors. Compare your biological fitness age to your chronological age.

Evaluate your cardiovascular fitness level based on your resting heart rate, age, and sex. Get a fitness score, category rating, and personalized improvement tips.

Calculate your ideal body weight using multiple medical formulas (Devine, Robinson, Miller, Hamwi). Compare results by height, sex, and frame size for healthy weight goals.

Calculate your waist-to-hip ratio (WHR) to assess health risk and body fat distribution. Get instant results with WHO-based risk categories for men and women.

Calculate lean body mass (LBM) using Boer, James, and Hume formulas. Enter weight, height, and sex to estimate fat-free mass with metric or imperial units.

Estimate your VO₂ max using multiple methods: resting heart rate, Cooper 12-minute run, 1.5-mile run, and Rockport walk test. Compare results with age and sex norms.

Calculate your ideal daily protein, carbs, and fat intake based on calories, body weight, and fitness goal. Supports multiple diet splits and custom ratios.

Calculate your daily sugar intake from foods and drinks. Compare against WHO and AHA recommended limits with visual breakdowns by category.

Calculate your daily fiber intake from foods and meals. Compare against recommended daily values with visual breakdowns by food category and fiber type.

Plan your intermittent fasting schedule with popular protocols like 16:8, 18:6, 20:4, and OMAD. Calculate eating and fasting windows, track progress, and get personalized tips.

Calculate your personalized daily net carb limit for the ketogenic diet based on your body stats, activity level, and keto approach. Includes macro breakdowns and food budget guidance.

Assess your blood pressure category and cardiovascular risk level based on your systolic and diastolic readings. Includes AHA/ACC guidelines, risk factors, and personalized recommendations.

Estimate your 10-year heart disease risk using the Framingham Risk Score model. Enter age, sex, cholesterol, blood pressure, and lifestyle factors for a personalized cardiovascular risk assessment.

Calculate your target heart rate zones for exercise using the Karvonen formula. Enter age and resting heart rate to get personalized training zones for fat burn, cardio, and peak performance.

Estimate your risk of developing type 2 diabetes based on age, BMI, family history, physical activity, blood pressure, and other key factors. Uses a validated scoring model for quick screening.